18 A uniform thin rod AB of length L has linear mass density x a 7 124 the CM of the rod lies at a distance of bx L L from A

Question

18 A uniform thin rod AB of length L has linear mass density x a 7 124 the CM of the rod lies at a distance of bx L L from A then a and b are related as 1 2a b 2 3a 2b 3 a 2b 9 A large number n of identical beads each of mass m and radius raro strung where x is measured from A If JEE Main Online 2015 4 a b La

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